March 19, the site will be in read only mode for 4 hours for a maintenance. If you are trying to ask a question and an article does not solve your issue, please find one of our partner sites for more help: @firefox, /r/firefox on reddit, and Mozillazine.org, we will have community standing by. Or live on our IRC channel - https://client02.chat.mibbit.com/?server=irc.mozilla.org channel #sumo

Firefox bị chậm

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What good is that super fast Internet connection when your browser is running at dial-up speed? This article will point you in the right direction to track down and fix the problem. Of course, if you need extra help with any of this, we have a community of volunteers standing by.

Note:The Refresh Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information. Consider using it before going through a lengthy troubleshooting process.

Update Firefox

We're constantly improving Firefox. The latest version is faster than ever before and contains fixes for many problems that could slow down your Firefox. See Update Firefox to the latest version to learn how to update.

Update your video drivers

Having outdated drivers might slow down performance. See your manufacturer's instructions on how to update your video drivers.